sonic-pi

https://github.com/sonic-pi-net/sonic-pi

C++

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Minitest::Assertions#diff

Returns a diff between +exp+ and +act+. If there is no known
diff command or if it doesn't make sense to diff the output
(single line, short output), then it simply returns a basic
comparison between the two.

Source | Google | Stack overflow

Edit

git clone [email protected]:sonic-pi-net/sonic-pi.git

cd sonic-pi

open app/server/ruby/vendor/minitest-5.18.1/lib/minitest/assertions.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Minitest--Assertions-diff-for-pr

# Commit to git

git add app/server/ruby/vendor/minitest-5.18.1/lib/minitest/assertions.rbgit commit -m "better docs for Minitest::Assertions#diff"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Minitest--Assertions-diff-for-pr

hub pull-request

# Celebrate!